8991792 has 60 divisors (see below), whose sum is σ = 25795224. Its totient is φ = 2922240.

The previous prime is 8991779. The next prime is 8991799. The reversal of 8991792 is 2971998.

8991792 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (8991799) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5143 + ... + 6665.

Almost surely, 2^8991792 is an apocalyptic number.

8991792 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8991792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12897612).

8991792 is an abundant number, since it is smaller than the sum of its proper divisors (16803432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8991792 is a wasteful number, since it uses less digits than its factorization.

8991792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578 (or 1569 counting only the distinct ones).

The product of its digits is 81648, while the sum is 45.

The square root of 8991792 is about 2998.6316879537. The cubic root of 8991792 is about 207.9451285239.

It can be divided in two parts, 89917 and 92, that added together give a palindrome (90009).

The spelling of 8991792 in words is "eight million, nine hundred ninety-one thousand, seven hundred ninety-two".